CN208249599U - Elevator traction mechanism with safety return circuit detection - Google Patents

Elevator traction mechanism with safety return circuit detection Download PDF

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Publication number
CN208249599U
CN208249599U CN201721836246.8U CN201721836246U CN208249599U CN 208249599 U CN208249599 U CN 208249599U CN 201721836246 U CN201721836246 U CN 201721836246U CN 208249599 U CN208249599 U CN 208249599U
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CN
China
Prior art keywords
switch
safety
return circuit
worm
detection
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Expired - Fee Related
Application number
CN201721836246.8U
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Chinese (zh)
Inventor
陈庆
邓健
李军
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Shaanxi Xiaoxi Electromechanical Technology Co Ltd
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Shaanxi Xiaoxi Electromechanical Technology Co Ltd
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/0005—Constructional features of hoistways
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02—Cages, i.e. cars
    • B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/26—Positively-acting devices, e.g. latches, knives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/0415—Driving gear ; Details thereof, e.g. seals actuated manually, e.g. additional safety system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/12—Arrangements for effecting simultaneous opening or closing of cage and landing doors
    • B66B13/125—Arrangements for effecting simultaneous opening or closing of cage and landing doors electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B1/00—Control systems of elevators in general
    • B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
    • B66B1/36—Means for stopping the cars, cages, or skips at predetermined levels
    • B66B1/365—Means for stopping the cars, cages, or skips at predetermined levels mechanical
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/0035—Arrangement of driving gear, e.g. location or support
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/02—Cages, i.e. cars
    • B66B11/026—Attenuation system for shocks, vibrations, imbalance, e.g. passengers on the same side
    • B66B11/0293—Suspension locking or inhibiting means to avoid movement when car is stopped at a floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
    • B66B11/0446—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with screw-nut or worm-screw gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/12—Arrangements for effecting simultaneous opening or closing of cage and landing doors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B13/00—Doors, gates, or other apparatus controlling access to, or exit from, cages or lift well landings
    • B66B13/02—Door or gate operation
    • B66B13/14—Control systems or devices
    • B66B13/16—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position
    • B66B13/165—Door or gate locking devices controlled or primarily controlled by condition of cage, e.g. movement or position electrical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B17/00—Hoistway equipment
    • B66B17/12—Counterpoises
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0018—Devices monitoring the operating condition of the elevator system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0006—Monitoring devices or performance analysers
    • B66B5/0037—Performance analysers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0043—Devices enhancing safety during maintenance
    • B66B5/005—Safety of maintenance personnel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
    • B66B5/0093—Testing of safety devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/021—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions the abnormal operating conditions being independent of the system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/027—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions to permit passengers to leave an elevator car in case of failure, e.g. moving the car to a reference floor or unlocking the door
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/028—Safety devices separate from control system in case of power failure, for hydraulical lifts, e.g. braking the hydraulic jack
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/04—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for detecting excessive speed
    • B66B5/044—Mechanical overspeed governors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/08—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions for preventing overwinding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
    • B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
    • B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
    • B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
    • B66B5/22—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces by means of linearly-movable wedges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/02—Guideways; Guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B66B7/08—Arrangements of ropes or cables for connection to the cars or cages, e.g. couplings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Maintenance And Inspection Apparatuses For Elevators (AREA)
  • Types And Forms Of Lifts (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
  • Elevator Door Apparatuses (AREA)

Abstract

The utility model relates to a kind of elevator traction mechanisms with safety return circuit detection, solve the deficiencies in the prior art, technical essential includes safety return circuit, including master switch, several limit switches and safety switch, and power supply is connect by safety return circuit with main safety contactor coil；Several switch detection modules, each switch detection module is corresponding with a master switch, limit switch or safety switch, the output end for switching detection module is communicated to connect by safety bus and upper-level control system, first test side of switch detection module is connect with the movable contact of master switch, limit switch or safety switch, and the second test side for switching detection module is connect with the stationary contact of master switch, limit switch or safety switch；Safety bus connects all switch detection modules and upper-level control system；Upper-level control system is received the output signal of all switch detection modules and isochronous controller by safety bus, controls the operation of elevator.

Description

Elevator traction mechanism with safety return circuit detection
Technical field
The utility model relates to technical field of elevator manufacturing, more particularly, to the elevator traction machine with safety return circuit detection Structure.
Background technique
In skyscraper, elevator is a kind of corollary equipment of indispensability, can be brought great convenience to occupant.Mesh Before, with the development of economy, middle high-income group largely occurs, and the demand of villa is also being continuously increased, and correspondingly, is suitable for The home lift of villa class building also comes into vogue.Elevator mainly includes hoistway, a sedan-chair being liftably arranged in hoistway Compartment, the driving mechanism to drive carriage to go up and down, currently, driving mechanism is traction-type driving mechanism mostly comprising one sets The traction machine in well headroom is set, traction machine connects traction sheave, and hoist ropes is arranged on traction sheave, and one end of hoist ropes connects sedan-chair Compartment, the other end connects a counterweight that can be gone up and down in hoistway, to balance the weight of carriage, to reduce the negative of traction machine It carries.When the forward and reverse rotation of traction machine driving traction sheave, the hoist ropes of winding on the traction sheave is moved back and forth, to realize carriage Lifting, and counterweight is then reversely gone up and down with carriage.
Due to traction sheave make it is mobile by frictional force drives hoist ropes, after elevator is used for a long time, hoist ropes and It is easy to produce slipping phenomenon or control system between traction sheave to fail to the control of traction machine, so as to cause the quick of carriage It rushes to summit or crouching bottom, less serious case leads to the impaired of passenger's body and elevator, serious to result even in passenger's death.For this purpose, people set The various device and method that car safety when elevator is run can be improved are counted, wherein most important mode is set on traction machine Set the arrestment mechanism of an Electromagnetic Control.When elevator power failure or because of the power supply of elevator failure control system cutting elevator When, electromagnet power loss in arrestment mechanism and lose electromagnetic attraction, arrestment mechanism is acted by the active force of tripping spring at this time, i.e., Locking braking can be realized to traction machine；And elevator is when having electricity, the electromagnet in arrestment mechanism obtain it is electric, so that arrestment mechanism be made to release To the locking of traction machine, elevator can be operated normally.
For example, disclosed one kind " elevator traction machine " in Chinese patent literature, notification number CN2401528Y, including Pedestal, motor, worm gear case, worm screw, worm gear shaft, hanging feet, worm gear, traction sheave, arrestment mechanism, one end of the worm gear shaft are equipped with inclined Heart set is equipped with tie-plate in the middle part of worm gear shaft, and tie-plate one end and worm gear are mutually solid, the other end and traction sheave mutually admittedly, in tie-plate and Bearing is respectively set between worm gear and between tie-plate and traction sheave, is equipped with adjustment in a pair of of hanging feet bottom of setting worm gear shaft Gasket.When work, first power on, so that arrestment mechanism is in energized state by control switch, while motor passes through worm screw band Dynamic worm gear operating, and then traction sheave rotation is driven by tie-plate, the rope of winding on the traction sheave can drive lift car Lifting.When carriage runs to scheduled a certain destination, stall motor by actuating control switch, while by brake Structure is dynamic.Braking principle is as follows: when motor power-off, the solenoid valve power loss of arrestment mechanism, the work that a pair of of band-type brake passes through spring force With locking braked wheel, stall motor shaft rapidly by embracing the frictional force between the cap watt and braked wheel explained, to make elevator car Compartment is stabilized ground stop layers.
However existing elevator traction mechanism still has following defect in secure context: due to existing arrestment mechanism Power comes from spring and electromagnet, and the frequency of use of arrestment mechanism is extremely low, that is to say, that arrestment mechanism is usually all in one Kind static standby mode when therefore, it is necessary to brake, is easy to lead to the failure of braking, Huo Zheyin because of the reasons such as stuck of spring The stuck of electromagnet causes arrestment mechanism to be difficult to reset unlock.Furthermore arrestment mechanism in locking traction machine or traction sheave still Make by frictional force realization, therefore the reliability of its locking is not high.
Utility model content
Purpose of the utility model is to solve reliably braking, safety are difficult to present in existing elevator traction mechanism Property not high problem, provide a kind of elevator traction mechanism, can realize traction sheave when elevator device has a power failure or breaks down can By braking, it is effectively prevented from carriage and rushes to summit or the safety accident at crouching bottom.
To achieve the goals above, the utility model uses following technical scheme:
A kind of elevator traction mechanism with safety return circuit detection, comprising:
Traction machine is made of servo motor, the power source as driving carriage lifting；
The hoist ropes of the traction sheave being connected with traction machine and winding on the traction sheave constitutes the movement of driving carriage lifting Executing agency；
Worm gear mechanism, worm gear therein is coaxially connected with traction sheave, and worm and wheel is meshed, to constitute traction The lockable mechanism of wheel；
Synchronization mechanism, the synchronous control including the synchronous motor, controllable traction machine and the synchronous motor revolving speed that are connected with worm screw Device processed, synchronous motor are made of servo motor, and the isochronous controller is controlled respectively according to the transmission ratio of worm and wheel and draged The revolving speed for drawing machine and synchronous motor keeps worm screw synchronous with the holding of the transmission ratio of the rotating ratio of turbine and worm and wheel；
Safety return circuit detection system,
Safety return circuit detection system includes:
Safety return circuit, including master switch, several limit switches and safety switch, power supply pass through safety return circuit and main safety Contactor coil connection；
Several switch detection modules, each switch detection module are corresponding with a master switch, limit switch or safety Switch switchs the output end of detection module and is communicated to connect by safety bus and upper-level control system, switchs the of detection module One test side is connect with the movable contact of master switch, limit switch or safety switch, switchs the second test side of detection module and total The stationary contact connection of switch, limit switch or safety switch；
Safety bus connects all switch detection modules and upper-level control system；
Upper-level control system is received the output signal of all switch detection modules by safety bus, controls the fortune of elevator Capable and fault detection.
A worm gear mechanism is arranged in the utility model, and worm gear and traction sheave are coaxially connected.It is known that worm gear Worm screw has self-locking, that is to say, that worm gear is unable to drive worm screw rotation, and worm gear rotation can only be driven by worm screw.For this purpose, this The synchronous motor that worm screw can be driven to rotate is arranged in utility model, and synchronous motor and traction machine are all made of and accurately control The servo motor of revolving speed.In this way, isochronous controller can need to control the revolving speed of traction machine according to the operation of carriage, at the same time, According to the revolving speed of the gearratio control synchronous motor of worm and gear, make to remain synchronous regime between worm screw, worm gear.Namely It says, worm gear at this time is to drive by traction machine, and worm screw is then by synchronous machine drives, worm gear as traction sheave It is in mutually independent state with worm screw, is hindered so that worm screw be made not formed to the rotation of worm gear, synchronous motor is in zero load State.When system blackout, worm screw stops operating, and reliable mechanical self-latching can be formed to worm gear, to be formed to traction sheave Reliable braking；When traction machine is out of control leads to velocity anomaly, worm gear can not form synchronous with worm screw, and worm screw can hinder automatically at this time Hinder the rotation of worm gear, to can avoid rapid aerating-holding or the crouching bottom of carriage.When traction machine or synchronous motor is out of control leads to turbine It will form when being unable to precise synchronization with worm screw, between worm gear and worm screw and contact with each other and interfere, at this time the load meeting of synchronous motor It rises rapidly, elevator control system is the power supply of cut-off synchronous motor and traction machine, and traction sheave is self-locking by worm and gear It acts on and reliably brakes.It is known that in the prior art, worm and gear is a kind of transmission mechanism with self-locking effect, it is Raising safety, the sensor of some detectable carriage lifting speeds can be arranged in people on elevator, to occur in carriage It cuts off the power when fast lifting and brakes traction machine.And on the one hand the worm and gear of the utility model has self-locking, simultaneously It may make up a reliable mechanical sensing device, on the one hand ensure reliably to make when abnormal conditions occur in power failure or traction machine When moving traction sheave, on the other hand can timely perceive the improper operating of traction machine, and then can dramatically ground hoisting elevator operation Safety.
In the utility model, safety return circuit is similar with the safety return circuit of conventional elevator, is all to have several safety devices, limit The contacts of contactor of position device switchs and is that the master switch of button switch or other limit switches are constituted, root in the utility model Be referred to as master switch, several limit switches and safety switch according to the difference of function, this equipment in elevator device compared with It is common, for example, the upper limit switch of elevator, lower position switch are known as limit switch in the present invention, in door machine Limiting device have motor driven, in the limit switch the utility model configured in transmission process be also referred to as limit switch, peace Full switch then represents contactless contactor of safety device in the utility model, such as traction motor detection switch etc., this is practical new It is not limited in type, all limit switches and safety switch are separately mounted to be configured with the Ministry of State Security of the elevator of two-shipper drag device On part, it should be understood that all limit switch and safety switch, master switch are the prior art；Switch detection mould Block itself has address due to included controller when connecting with safety bus, has switch detection module The mode of address includes but are not limited to connect by distributed I/O with upper-level control system, and the switch of the utility model detects mould The element that block can be selected is more, does not limit specific element in the utility model, it is only necessary to which it is capable of providing detection and address Function, those skilled in the art, which can reach corresponding function using any intelligent chip, detection chip, can be realized this The purpose of utility model, conventional elevator system establishing criteria are equipped with safety return circuit, i.e., are connected by several normally closed switch, control The power supply of system active force element processed.When touching dangerous action triggers, corresponding switch just switches to open circuit by closed state State, safety return circuit disconnect, and contactor unclamps in circuit, and system active force element loses power supply, and system stops.It ensures Personnel safety.But in actual use, over time, each switch is during long-term through-flow, contact resistance by Cumulative big, safety return circuit, which respectively switchs partial pressure, gradually to be increased, and the voltage acted on the contactor of control dynamical element is gradually reduced. When pressure drop reaches certain value, contactor will unclamp, and elevator mistakenly stop is caused to stop, and cause failure.After maintenance staff reach scene It is larger to need to find out failed element difficulty in numerous switches, it is mainly sharp using switch detection module in the utility model With its own address signal, when there is open circuit in safety return circuit directly according to the corresponding limit switch of address signal detection and safety Switch, master switch can quickly position failed element for maintenance staff, replace quasi- failed element in time and provide judgment basis. Upper-level control system itself can provide the data such as the position of failed element, the component being easily damaged can also be recorded, For the maintenance in later period, even anticipation, early warning, can be completed by upper-level control system.Upper-level control system is to traction Power resources including machine are controlled, this control mode is conventional control mode.
Preferably, the facewidth of the worm screw is 1-3mm smaller than the space width of worm gear, when synchronous machine drives worm and wheel When keeping synchronous, discrete state is kept between worm tooth and worm-gear toothing.The worm and gear of the utility model is operated normally in elevator Shi Bingfei be one transmission power transmission mechanism, due to worm screw the facewidth than the space width of worm gear 1-3mm small, worm tooth There can be a gap between the tooth socket of worm gear, to make to keep discrete state between worm tooth and worm-gear toothing, can avoid snail Contact friction is generated between worm and wheel, while reducing isochronous controller and the control precision of traction machine, synchronous motor revolving speed is wanted It asks, the frequent shutdown of elevator caused by avoiding because of the slight deviations of revolving speed between traction machine, synchronous motor.
Preferably, one end of the worm screw is connected with synchronous motor, the other end of worm screw and one can drive worm screw to turn Dynamic rescue facility is associated.
When elevator exception occurs and shuts down, worm and gear brakes traction sheave, at this point, passenger can pass through the rescuing machine of auxiliary Structure drives worm screw rotation, to drive traction sheave rotation by worm gear, keeps carriage mobile and realizes nearest leveling, passenger at this time Can remove manually elevator gate and layer door and realize and save oneself.Unlike the prior art, the rescuing machine of the utility model Structure not directly drives traction machine, that is to say, that during entirely saving oneself, traction sheave be in always turbine and worm from lock control Under system, rescue facility positively can drive traction sheave to rotate, on the contrary, traction sheave can not reversely drag rescue facility's movement, from And be effectively prevented from because the reasons such as the part getting stuck of rescue facility or fault cause carriage rush to summit or crouching bottom.
Preferably, the rescue facility includes the rescue motor connecting with worm screw, the rescue motor and a standby electricity Source electrical connection.
When elevator operates normally, rescue motor is in shutdown status；When elevator occur having a power failure or abnormal conditions and cut off Traction machine, synchronous motor power supply when, backup power source can for rescue the motor short time in power supply, so as to make rescue motor can drive Traction sheave rotation, and then make carriage with low speed elevation nearest leveling.
Preferably, the backup power source is battery either man-power generator, the man-power generator includes one Manpower driving element in carriage is set, and when the power supply of synchronization mechanism and traction machine is cut off, the passenger in carriage passes through Manpower driving element makes the rotor of man-power generator rotate power generation, to drive rescue motor rotation, and then passes through worm screw, worm gear Drive traction sheave rotation.Since the nearest leveling of carriage only need to be made, therefore, battery can be used in we in emergency relief As backup power source, to be conducive to simplify structure, and passenger is facilitated to use.And man-power generator is then conducive to most passengers and leads to The mode for crossing self-generating realizes passenger self-rescue, so that battery malfunction causes caused by can avoid because of reasons such as electric power storage tank discharges It can not save oneself, be conducive to improve the reliability saved oneself.
Preferably, the manpower driving element includes the sliding slot being vertically situated in car side wall and is located on sliding slot Side and it is rotatably supported at the rotation axis on bearing block, rotation axis is connected with the rotor of man-power generator, is equipped in sliding slot upper The sliding block of lower slider, sliding block are hinged at the bar of trampling rotated in perpendicular, and rotation axis is equipped with driving wheel, driving One-way driving mechanism is equipped between wheel and rotation axis, one end of a traction rope is connected on sliding block, the other end connection of traction rope And wind on the drive wheel, be arranged with disc spring on the rotating shaft, the outer end of disc spring is connected with rotating wheel, the inner end of disc spring with turn The bearing block of moving axis is connected, described to trample bar with a position of readiness straight up and be turned out to horizontality Operating position, when trampling bar and being in operating position, passenger tramples downwards bar, to move down with movable slider, in turn Driving wheel is driven to rotate forward by traction rope, disc spring takes up accumulation of energy at this time, and driving wheel is driven by one-way driving mechanism and rotated Axis rotation, and rotor is driven to rotate and generate electricity；When sliding block moves down in place, bar is trampled in release, and disc spring releases energy, thus Driving wheel is driven to rotate backward, traction rope band movable slider moves up reset at this time.
It is known that the strength of people's leg is significantly larger than the strength of hand, for this purpose, the utility model is creatively in carriage Side wall on setting one it is moving up and down trample bar, when needing emergency relief, passenger can be fluctuated outward and trample bar, make to trample Bar is in horizontal operating position, and passenger is convenient to trample bar at this time, moves down to make to trample bar band movable slider, And then driving wheel is driven to rotate forward by traction rope.Disc spring gradually takes up and accumulation of energy at this time, and driving wheel passes through single-direction transmission machine Structure drives rotation axis rotation, and rotor is driven to rotate and generate electricity；When sliding block moves down in place, bar is trampled in release, and disc spring is released Exoergic amount, so that driving wheel be driven to rotate backward, traction rope band movable slider moves up reset at this time.So on circulate, Ji Keshi The lasting power generation of existing man-power generator.
Preferably, switch detection module includes checking judgment module, timesharing circulation energization module and controller, the inspection The output end for looking into judgment module is communicated to connect by safety bus and upper-level control system, and the inspection judgment module first detects End is the high frequency output end connecting with the movable contact of master switch, limit switch or safety switch, checks the second inspection of judgment module Surveying end is the pile-up pulse test side connecting with the stationary contact of master switch, limit switch or safety switch, checks judgment module High-frequency signal input terminal is electrically connected with timesharing circulation energization module, and the control terminal of timesharing circulation energization module is electrically connected with controller It connects.
Each switch detection module information in bus is gradually requested in the utility model in a cycle.Each switch detection Switching information in collected respectively corresponding safety return circuit is sent to upper-level control system by module.At interval of for a period of time just Operation is primary.During system power transmission, circular flow detects program.When detection program is not limited to elevator operation, elevator device is waited for It also needs to run when machine.
Each switch detection module is independently-powered, has from the function of encoding upper bus.The switch that will can respectively measure Closed state and the analog signals of reflection contact resistance pass through bus feedback to host computer.Externally there is input terminal in module test side Mouth and output port.High-frequency impulse can occur for output port, and the pulse signal of sending is filled by individual safety chain switches Feed back inbound port.Input port has the function of step-by-step counting and analog measurement.Therefore, it in the utility model, is examined to first It surveys end and is named as high frequency output end, the second test side is named as pile-up pulse test side, as long as in fact, random devices can reach To one end high frequency output, the technical solution of the application, therefore, the utility model pair is can be realized in second end pile-up pulse detection Element model itself is without limitation.
There are two types of the working conditions of the utility model,
Switch disconnects: because pulse test circuit can not constitute circuit, the high-frequency impulse that signal detection end output port issues Input port can not detect, judge that switch state disconnects.Without accumulation, measuring analog quantity is 0 for pulse.Pass through signal transmission passage It is disconnected to host computer feedback switch signal, the analog quantity of accumulation is 0.
Close the switch: the high-frequency impulse that signal detection end output port issues detects the pulse of same frequency in input port Signal judges that switch state is closed.The analog quantity of pulse accumulation can reflect switch contact resistance sizes.It is steady in supply voltage Fixed, in the case of same detection cycle, the analog quantity is smaller, illustrates that switch contact resistance is bigger, and pulse energy loss is more.It should Analog quantity is bigger, illustrates that contact resistance is smaller, and pulse energy is lost smaller.
Preferably, the power supply is connected by the input terminal of low-pass filter and safety return circuit, the output of safety return circuit End is connect by a low-pass filter with main safety contactor coil, and each pile-up pulse test side for checking judgment module is equal It is connected by a high-pass filter with the stationary contact of corresponding master switch, limit switch or safety switch.In the utility model, In actual use, over time, each switch is in long-term through-flow mistake for master switch, limit switch or safety switch Cheng Zhong, contact resistance are gradually increased, therefore cannot be equal to ideal circuit, check that the pulse of judgment module output end is reaching quiet The direction of short circuit, i.e. pile-up pulse test side are selected behind contact, and pile-up pulse quantity is calculated by pile-up pulse test side, reaches meter Calculate the effect of current resistance.
Therefore, the utility model has the following beneficial effects: traction can be realized when elevator device has a power failure or breaks down The reliable braking of wheel is effectively prevented from carriage and rushes to summit or the safety accident at crouching bottom.Also failure can be quickly positioned for maintenance staff Element replaces quasi- failed element in time and provides judgment basis.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the utility model.
Fig. 2 is a kind of structural schematic diagram of manpower driving element；
Fig. 3 is the circuit diagram of the utility model safety return circuit system.
In figure: 1, traction machine 2, worm gear mechanism 4, traction sheave 41, hoist ropes 5, synchronous motor 6, rescue motor 7, mounting platform 8, carriage 81, sliding slot 82, rotation axis 821, bearing block 83, sliding block 84, trample bar 85, driving wheel 86, traction rope 87, disc spring.
Specific embodiment
The utility model is further described with specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, a kind of elevator traction mechanism, including the traction being arranged on the mounting platform 7 at the top of elevator shaft Machine 1, traction machine is using servo motor, in order to accurately control its revolving speed, the power that carrying means are gone up and down at driving carriage Source.A coaxially connected traction sheave 4 on the output shaft of traction machine, is arranged with hoist ropes 41 on traction sheave, one end of hoist ropes around Be connected after crossing angle pulley with carriage 8, the other end of hoist ropes around being connected after angle pulley with counterweight 9, traction sheave with Hoist ropes collectively forms the action actuating mechanism of driving carriage lifting.When traction machine output torque is to drive traction sheave to rotate, The hoist ropes one end decline of winding on the traction sheave, the other end rises, to drive the lifting of carriage.Connect when with hoist ropes one end When the carriage that connects rises, what is connect with the hoist ropes other end declines to re-synchronizing；Conversely, when the carriage being connect with hoist ropes one end When decline, connect with the hoist ropes other end to re-synchronize rise.
In addition, the utility model needs to be arranged a worm gear mechanism 2, wherein the wheel shaft of worm gear and traction sheave coaxially connects It connects, the worm screw being arranged on mounting platform engages with turbine.Since the worm and gear of intermeshing together has self-locking, That is, worm gear is unable to drive worm screw rotation, worm gear rotation can only be driven by worm screw.Therefore, intermeshing worm and gear It may make up the lockable mechanism of traction sheave.
Certainly, in order to ensure the normal operation of elevator, the utility model further includes a synchronization mechanism, so as to make worm screw with The rotating ratio of turbine is synchronous with the holding of the transmission ratio of worm and wheel.That is, when traction sheave and worm gear stop operating, snail Bar is remain stationary, and worm screw at this time can form worm gear reliably self-locking；When the rotation of traction machine driving traction sheave, to make carriage When lifting, worm gear follows wheel rotation, and synchronization mechanism rotates worm screw at this time, and makes rotating ratio and the worm screw of worm screw and turbine It is synchronous with the holding of the transmission ratio of worm gear.In this way, worm screw worm gear will not be formed it is self-locking, traction sheave can normal rotation, and turbine Right traction sheave and synchronization mechanism driving are distinguished with worm screw, do not have the transmission of torque, synchronous machine at this time between worm gear and worm screw Structure is in light condition.When elevator power failure or system occur abnormal, synchronization mechanism and traction sheave are cut off the power simultaneously, this When worm screw worm gear can be formed it is reliable self-locking.It is understood that the utility model also needs one elevator controlling of setting System so that the operation to elevator controls, while detecting the failure or abnormal conditions of elevator, timely moves to make Make, to ensure the safety of elevator operation.Since elevator control system is the prior art that all elevators all have, Specific description is not done in the present embodiment.
Specifically, the synchronization mechanism of the utility model includes that the isochronous controller with servo control module and worm screw connect The synchronous motor 5 connect, synchronous motor equally use servo motor, and isochronous controller accurately controls traction machine and synchronous motor Revolving speed.Isochronous controller controls the revolving speed of traction machine according to the operating condition of lift car first, then according to worm and wheel Transmission ratio synchronous motor revolving speed, so that it is guaranteed that worm screw is synchronous with the holding of the transmission ratio of the rotating ratio of turbine and worm and wheel To make worm and worm wheel keep independent rotation, synchronous motor at this time is in light condition.If the traction machine of elevator turns There is exception in speed control, generates abnormal or synchronous motor revolving speed control so as to cause carriage lifting speed and exception occurs, this When turbine and the revolving speed of worm screw can not match, interfered with each other to be formed between worm and gear, drive the synchronization of worm screw at this time The load of motor can rapid increase.When synchronous motor load is more than maximum set value, elevator control system cuts off and synchronizes electricity The power supply of machine and traction machine, worm screw at this time may make up to the reliable self-locking of worm gear, thus realize the reliable braking of traction sheave, It avoids carriage occurs rushing to summit or the safety accident at crouching bottom.As long as it should be noted that in the utility model synchronous motor revolving speed When normal, then traction sheave is unable to drive worm gear quick rotation.And if loaded in meeting rapidly when the revolving speed of synchronous motor is too fast It rises, elevator control system is the power supply of cut-off synchronous motor and traction machine, so that it is guaranteed that the safety of elevator operation.
In addition, the facewidth of the utility model worm screw 1-3mm small than the space width of worm gear, preferred value 2mm.In this way, When synchronous machine drives worm and wheel keeps synchronous, can make to keep discrete state between worm tooth and worm-gear toothing.Namely It says, the gap of best 1mm is kept between worm tooth and worm-gear toothing, to avoid friction interference is generated between worm and worm wheel, it is ensured that Synchronous motor is in light condition.
In order to which when elevator breaks down, passenger saves oneself in time, our settable corresponding rescue facilities, so as to tight Anxious moment driving worm screw rotation, and then traction sheave rotation is driven by turbine.Specifically, we can make one end of worm screw with it is synchronous Motor is connected, and the other end of worm screw is connected with a rescue motor 6, which is usually in shutdown status, that is, It says, the motor shaft for rescuing motor follows worm gear to rotate together.When elevator occur having a power failure or abnormal conditions and cut off traction machine, synchronization When the power supply of motor, passenger can press the button of saving oneself in carriage, to start rescue motor, rescuing motor at this time be can be driven Worm screw rotation, and then worm gear rotation is driven by worm screw, it is final to drive traction sheave rotation, keep carriage mobile and realizes flat nearby Layer, passenger can leave carriage in time and complete to save oneself.
In order to ensure reliably saving oneself in any case, our settable backup power source being made of battery, from It and is rescue motor power supply in elevator power failure.In addition, backup power source is also possible to a manpower small-sized by manually driven Generator, so that the passenger in carriage is that emergent self-rescue is completed in rescue motor power supply by man-power generator self-generating.It should Man-power generator includes the generator unit (not shown) with stator and rotor, the manpower driving for driving rotor to rotate Element.Passenger in carriage can make the rotor of man-power generator rotate power generation by manpower driving element, to drive rescue electricity Machine rotation, and then traction sheave rotation is driven by worm screw, worm gear.
Further, as shown in Fig. 2, manpower driving element includes the sliding slot 81 being vertically situated in car side wall and position Above sliding slot and the rotation axis 82 that is rotatably supported on bearing block 821, rotation axis are connected with the rotor of generator unit, To make rotation axis directly rotor can be driven to rotate.Preferably, chain can be respectively set on the armature spindle of rotation axis and generator unit It takes turns, winding driving chain between two sprocket wheels, so that rotation axis be made to be connected by driving chain with rotor.In this way, we can Generator unit is arranged in the top of carriage, so that structure be facilitated to arrange.In addition, the sliding block that can slide up and down is arranged in sliding slot 83, what being hinged at of sliding block can rotate in perpendicular tramples bar 84, tramples bar with straight up standby It position and is turned out to the operating position of horizontality.When trampling bar and being in position of readiness, tramples bar and be close to the interior of carriage Side wall；When trampling bar and being in operating position, the limited block on sliding block, which makes to trample bar, is maintained at horizontality, in order to passenger to Under trample bar.
Certainly, we also need to be arranged on the rotating shaft a driving wheel 85, and the race of U-shaped is arranged in the edge of driving wheel, And one-way driving mechanism is set between driving wheel and rotation axis.On sliding block connect a traction rope 86, traction rope it is another End connects and in the race of driving wheel.In this way, can be moved downwards with movable slider when passenger tramples bar downwards It is dynamic, to drive driving wheel to rotate forward by traction rope, and then rotation axis rotation is driven by one-way driving mechanism, with driving Rotor is rotated and is generated electricity.It should be noted that we can also be located at one disc spring of rotating wheel side position winding on the rotating shaft 87, the outer end of disc spring is connected with the side of rotating wheel, and the inner end of disc spring is connected with the bearing block of rotation axis.As such, it is desirable to When rescue, passenger can will first trample bar and be turned out to horizontal operating position, bar then be trampled downwards, to drive cunning Block moves down, and then drives driving wheel to rotate forward by traction rope, and disc spring takes up accumulation of energy at this time, and driving wheel is by unidirectionally passing Motivation structure drives rotation axis rotation, and rotor is driven to rotate and generate electricity；When sliding block moves down in place, bar, disk are trampled in release Spring releases energy, so that driving wheel be driven to rotate backward, traction rope band movable slider moves up reset at this time.It loops back and forth like this, i.e., Man-power generator can be made to continue to generate electricity.
As shown in figure 3, traction machine described in above embodiment is connected to power supply by main safety contactor contact；Safety Circuit detecting system, comprising: safety return circuit, including master switch, several limit switches and safety switch, power supply are returned by safety The connection of Lu Yuzhu safety contactor coil；Several switch detection modules, each switch detection module are corresponding with one and always open Pass, limit switch or safety switch, the output end for switching detection module are communicated to connect by safety bus and upper-level control system, First test side of switch detection module is connect with the movable contact of master switch, limit switch or safety switch, switchs detection module The second test side connect with the stationary contact of master switch, limit switch or safety switch；Safety bus connects all switch detections Module and upper-level control system；Upper-level control system receives the output signal of all switch detection modules by safety bus.It opens Closing detection module includes checking judgment module, timesharing circulation energization module and controller, the output end for checking judgment module It is communicated to connect by safety bus and upper-level control system, the first test side of the inspection judgment module is and master switch, limit The high frequency output end of the movable contact of switch or safety switch connection checks that the second test side of judgment module is and master switch, limit The pile-up pulse test side of the stationary contact of bit switch or safety switch connection checks the high-frequency signal input terminal of judgment module and divides The control terminal of the electrical connection of Shi Xunhuan energization module, timesharing circulation energization module is electrically connected with the controller.The power supply passes through low pass The output end of the connection of the input terminal of filter and safety return circuit, safety return circuit passes through a low-pass filter and main safety contactor Coil connection, each pile-up pulse test side for checking judgment module pass through a high-pass filter and corresponding master switch, The connection of the stationary contact of limit switch or safety switch.
In all embodiments of the utility model, safety return circuit is similar with the safety return circuit of conventional elevator, is all to have several Safety device, limiting device contacts of contactor switch and be that the master switch of button switch or other limit switches are constituted, this Difference in utility model according to function is referred to as master switch, several limit switches and safety switch, and this equipment exists Relatively conventional in elevator device, for switch detection module itself due to included controller, the controller in embodiment can be list Piece machine, so having address when connecting with safety bus, the switch detection module of the utility model can be selected Element it is more, specific element is not limited in the utility model, it is only necessary to it is capable of providing detection and address function, this Field technical staff can reach the mesh that the utility model can be realized in corresponding function using any intelligent chip, detection chip , conventional elevator system establishing criteria is equipped with safety return circuit, i.e., it is connected by several normally closed switch, control system active force The power supply of element.When touching dangerous action triggers, corresponding switch just switches to off state, safety return circuit by closed state It disconnects, contactor unclamps in circuit, and system active force element loses power supply, and system stops.Ensure personnel safety.But it is real In the use process of border, over time, during long-term through-flow, contact resistance is gradually increased each switch, and safety is returned Road respectively switchs partial pressure and gradually increases, and the voltage acted on the contactor of control dynamical element is gradually reduced.When pressure drop reaches one When definite value, contactor will unclamp, and elevator mistakenly stop is caused to stop, and cause failure.Maintenance staff need after reaching scene numerous It is larger that failed element difficulty is found out in switch, using switch detection module in the utility model, mainly utilizes its own address Signal, when there is open circuit in safety return circuit directly according to the corresponding limit switch of address signal detection and safety switch, master switch, Failed element can be quickly positioned for maintenance staff, quasi- failed element is replaced in time and provides judgment basis.Upper-level control system Itself the data such as the position of failed element can be provided, the component being easily damaged can also be recorded, the dimension for the later period Shield, even anticipation, early warning, can be completed by upper-level control system.
Each switch detection module information on safety bus is gradually requested in safety circuit detecting system a cycle. Switching information in collected respectively corresponding safety return circuit is sent to upper-level control system by each switch detection module.At interval of A period of time, just operation was primary.During system power transmission, circular flow detects program.When detection program is not limited to elevator operation, It also needs to run when elevator device is standby.
Each switch detection module is independently-powered, has from the function of encoding upper bus.The switch that will can respectively measure Closed state and the analog signals of reflection contact resistance pass through bus feedback to host computer.Externally there is input terminal in module test side Mouth and output port.High-frequency impulse can occur for output port, and the pulse signal of sending is filled by individual safety chain switches Feed back inbound port.Input port has the function of step-by-step counting and analog measurement.Therefore, it in the utility model, is examined to first It surveys end and is named as high frequency output end, the second test side is named as pile-up pulse test side, as long as in fact, random devices can reach To one end high frequency output, the technical solution of the application, therefore, the utility model pair is can be realized in second end pile-up pulse detection Element model itself is without limitation.
There are two types of the working conditions of the present embodiment,
Switch disconnects: because pulse test circuit can not constitute circuit, the high-frequency impulse that signal detection end output port issues Input port can not detect, judge that switch state disconnects.Without accumulation, measuring analog quantity is 0 for pulse.Pass through signal transmission passage It is disconnected to host computer feedback switch signal, the analog quantity of accumulation is 0.
Close the switch: the high-frequency impulse that signal detection end output port issues detects the pulse of same frequency in input port Signal judges that switch state is closed.The analog quantity of pulse accumulation can reflect switch contact resistance sizes.It is steady in supply voltage Fixed, in the case of same detection cycle, the analog quantity is smaller, illustrates that switch contact resistance is bigger, and pulse energy loss is more.It should Analog quantity is bigger, illustrates that contact resistance is smaller, and pulse energy is lost smaller.
Embodiment 2:
In the present embodiment, it is also configured with several point of control system, each a point control system has been correspondingly connected with several and has opened Close detection module, each divide the input terminal of control system with switch detection module it is direct-connected, divide the output end of control system with it is upper Control system connection, rest part are same as the previously described embodiments.
The above is only the preferred embodiment of the utility model, not imposes any restrictions to the utility model, all According to the utility model technical spirit any simple modification, change and equivalent transformation to the above embodiments, still fall within The protection scope of technical solutions of the utility model.

Claims (8)

1. a kind of elevator traction mechanism with safety return circuit detection, characterized in that include:
Traction machine is made of servo motor, the power source as driving carriage lifting；
The movement that the hoist ropes of the traction sheave being connected with traction machine and winding on the traction sheave constitutes driving carriage lifting executes Mechanism；
Worm gear mechanism, worm gear therein is coaxially connected with traction sheave, and worm and wheel is meshed, to constitute traction sheave Lockable mechanism；
Synchronization mechanism, the isochronous controller including the synchronous motor, control traction machine and synchronous motor revolving speed that are connect with worm screw, together Step motor is made of servo motor, and the isochronous controller controls traction machine and same according to the transmission ratio of worm and wheel respectively The revolving speed for walking motor, keeps worm screw synchronous with the holding of the transmission ratio of the rotating ratio of turbine and worm and wheel；
Safety return circuit detection system,
Safety return circuit detection system includes:
Safety return circuit, including master switch, several limit switches and safety switch, power supply pass through safety return circuit and main safe contact The connection of device coil；
Several switch detection modules, each switch detection module are corresponding with a master switch, limit switch or safety switch, The output end for switching detection module is communicated to connect by safety bus and upper-level control system, switchs the first detection of detection module End is connect with the movable contact of master switch, limit switch or safety switch, switchs the second test side and the master switch, limit of detection module The connection of the stationary contact of bit switch or safety switch；
Safety bus connects all switch detection modules and upper-level control system；
Upper-level control system, by safety bus receive it is all switch detection modules output signals, control the operation of elevator with And fault detection.
2. the elevator traction mechanism according to claim 1 with safety return circuit detection, characterized in that the tooth of the worm screw Width is 1-3mm smaller than the space width of worm gear, when synchronous machine drives worm and wheel keeps synchronous, between worm tooth and worm-gear toothing Keep discrete state.
3. the elevator traction mechanism according to claim 1 with safety return circuit detection, characterized in that the one of the worm screw End is connected with synchronous motor, and the other end of worm screw is associated with the rescue facility of a driving worm screw rotation.
4. the elevator traction mechanism according to claim 3 with safety return circuit detection, characterized in that the rescue facility Including the rescue motor connecting with worm screw, the rescue motor is electrically connected with a backup power source.
5. the elevator traction mechanism according to claim 4 with safety return circuit detection, characterized in that the backup power source For battery either man-power generator, the man-power generator includes the manpower driving element being arranged in carriage.
6. the elevator traction mechanism according to claim 5 with safety return circuit detection, characterized in that the manpower driving Element include the sliding slot being vertically situated in car side wall and above sliding slot and be rotatably supported on bearing block turn Moving axis, rotation axis are connected with the rotor of man-power generator, and the sliding block slided up and down is equipped in sliding slot, and sliding block has been hinged at What is rotated in perpendicular tramples bar, and rotation axis is equipped with driving wheel, and single-direction transmission machine is equipped between driving wheel and rotation axis One end of structure, a traction rope is connected on sliding block, and the other end of traction rope is connected and wound on the drive wheel, on the rotating shaft around Equipped with disc spring, the outer end of disc spring is connected with rotating wheel, and the inner end of disc spring is connected with the bearing block of rotation axis, described to trample bar It position of readiness with one straight up and is turned out to the operating position of horizontality.
7. the elevator traction mechanism according to claim 1 with safety return circuit detection, characterized in that switch detection module Including checking that judgment module, timesharing circulation energization module and controller, the output end for checking judgment module are total by safety Line and upper-level control system communicate to connect, and the first test side of the inspection judgment module is and master switch, limit switch or safety The high frequency output end of the movable contact connection of switch checks that the second test side of judgment module is and master switch, limit switch or peace The pile-up pulse test side of the stationary contact connection of full switch checks that the high-frequency signal input terminal of judgment module and timesharing circulation are powered The control terminal of module electrical connection, timesharing circulation energization module is electrically connected with the controller.
8. the elevator traction mechanism according to claim 7 with safety return circuit detection, characterized in that the power supply passes through The connection of the input terminal of low-pass filter and safety return circuit, the output end of safety return circuit are connect by a low-pass filter with main safety The connection of tentaculum coil, each pile-up pulse test side for checking judgment module pass through a high-pass filter and always open with corresponding It closes, the stationary contact connection of limit switch or safety switch.
CN201721836246.8U 2017-10-17 2017-12-25 Elevator traction mechanism with safety return circuit detection Expired - Fee Related CN208249599U (en)

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CN201710965137 2017-10-17
CN2017109651374 2017-10-17

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Application Number Title Priority Date Filing Date
CN201711297826.9A Pending CN109665406A (en) 2017-10-17 2017-12-08 A kind of two-shipper drag device
CN201721701151.5U Expired - Fee Related CN207792432U (en) 2017-10-17 2017-12-08 A kind of drag device with manual rescue device
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CN201711298667.4A Pending CN109665418A (en) 2017-10-17 2017-12-08 A kind of elevator traction mechanism
CN201721701152.XU Expired - Fee Related CN207792401U (en) 2017-10-17 2017-12-08 A kind of two-shipper drag device
CN201711299460.9A Pending CN109665419A (en) 2017-10-17 2017-12-08 A kind of drag device with manual rescue device
CN201711425729.3A Pending CN109665396A (en) 2017-10-17 2017-12-25 The anti-error telephone-moving structure of elevator lifting
CN201711424564.8A Pending CN109665402A (en) 2017-10-17 2017-12-25 A kind of drag device with manual rescue mechanism
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CN201721839184.6U Expired - Fee Related CN208037803U (en) 2017-10-17 2017-12-25 A kind of drag device with rescue door machine

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CN201711424490.8A Pending CN109665394A (en) 2017-10-17 2017-12-25 Elevator traction mechanism with safety return circuit detection
CN201721838714.5U Expired - Fee Related CN208037802U (en) 2017-10-17 2017-12-25 A kind of drag device with safety tongs
CN201711423217.3A Pending CN109665420A (en) 2017-10-17 2017-12-25 A kind of drag device with safety tongs
CN201711424492.7A Pending CN109665395A (en) 2017-10-17 2017-12-25 Two-shipper towed elevator configured with safety return circuit detection system
CN201711425712.8A Pending CN109665426A (en) 2017-10-17 2017-12-25 The opposed carrying means of elevator counterweight
CN201711425678.4A Pending CN109665403A (en) 2017-10-17 2017-12-25 A kind of concealed two-shipper drag device of counterweight
CN201711425682.0A Pending CN109665429A (en) 2017-10-17 2017-12-25 A kind of gate layer door system based on safety return circuit detection
CN201711425687.3A Pending CN109665407A (en) 2017-10-17 2017-12-25 A kind of two-shipper towed elevator based on safety return circuit detection
CN201711425731.0A Pending CN109665416A (en) 2017-10-17 2017-12-25 A kind of counterweight arragement construction in elevator traction system
CN201711424491.2A Pending CN109665421A (en) 2017-10-17 2017-12-25 Elevator traction mechanism with safety return circuit detection system
CN201721837178.7U Expired - Fee Related CN208054690U (en) 2017-10-17 2017-12-25 Elevator configured with safety return circuit detecting system and manual rescue device
CN201721834840.3U Expired - Fee Related CN208103630U (en) 2017-10-17 2017-12-25 A kind of concealed two-shipper drag device of counterweight
CN201721839185.0U Expired - Fee Related CN207827649U (en) 2017-10-17 2017-12-25 The opposed carrying means of elevator counterweight
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CN201721845421.XU Expired - Fee Related CN208037781U (en) 2017-10-17 2017-12-25 The opposed drag device of elevator
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CN109665406A (en) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 A kind of two-shipper drag device
CN207792397U (en) * 2017-12-08 2018-08-31 陕西小溪机电科技有限公司 A kind of elevator emergent rescue mechanism
CN207792433U (en) * 2017-12-08 2018-08-31 陕西小溪机电科技有限公司 A kind of elevator traction mechanism
CN208037807U (en) * 2017-12-25 2018-11-02 陕西小溪机电科技有限公司 A kind of elevator door-motor system based on safety return circuit detection
CN208037808U (en) * 2017-12-25 2018-11-02 陕西小溪机电科技有限公司 A kind of gate layer door system based on safety return circuit detection
CN112978545B (en) * 2021-02-07 2022-06-07 宁波市特种设备检验研究院 Counterweight opposed traction mechanism for emergency aid of elevator

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CN109665394A (en) * 2017-10-17 2019-04-23 陕西小溪机电科技有限公司 Elevator traction mechanism with safety return circuit detection

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